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Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

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2 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHWindows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Leading reported evidence

Disconnect wires

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

My alarms/siren kept going off randomly so I disconnected the wires to both of them.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed work

Check code

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Check the code on the ECU under the seat you can read the label using a torch.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Read full discussion summary

Leading evidence: 'Disconnect wires' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check code' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 2 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace micro-switch, and the roof control unit in the footwell

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I've already replaced the micro-switch, and the roof control unit in the footwell after this unit burnt out.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Check code

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Check the code on the ECU under the seat you can read the label using a torch.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace microswitch in addition

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

, ultimately replacing the microswitch in addition to the other parts shown in the thread -- although this issue described above has lingered.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use torch

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Check the code on the ECU under the seat you can read the label using a torch.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Frequently discussed actions (5)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Check code

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Check the code on the ECU under the seat you can read the label using a torch.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Disconnect wires

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

My alarms/siren kept going off randomly so I disconnected the wires to both of them.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace micro-switch, and the roof control unit in the footwell

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

I've already replaced the micro-switch, and the roof control unit in the footwell after this unit burnt out.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Replace microswitch in addition

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion · Original poster

, ultimately replacing the microswitch in addition to the other parts shown in the thread -- although this issue described above has lingered.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Use torch

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion

Check the code on the ECU under the seat you can read the label using a torch.

Windows don't dip, Alarm chirps twice and randomly alarms when locked - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • 986Forum: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T060112Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Problem statement. My windows don't dip when I unlock the convertable roof. I've already replaced the micro-switch, and the roof control unit in the footwell after this unit burnt out. The windows also don't dip when the roof is down and I raise the roof. Finally, the alarm acts erratically -- it chirps twice when I lock (it locks), but then if often starts to alarm for no reason. The windows do go up though when I latch the roof after raising it. Background: I had the alarm, keys and ECU reprogrammed a couple of years ago, and had no issues. The roof stopped working last year, which I fixed , ultimately replacing the microswitch in addition to the other parts shown in the thread -- although this issue described above has lingered. Current fault codes: Alarm I48 - 34: Status: Not present. Passenger compartment monitoring sensor, short to ground. Occurrence counter 1 - 33: Status: Not present. W line (DME - immobilizer), open circuit. Occurrence counter 74 - 25: Status lead, signal converter, short circuit to B+. Occurrence counter 127 Alarm I32 - 34: Status: Not present. Interior sensor faulty, Not present. Occurrence counter 1 - 33: Status: Not present. Interior sensor faulty, Not present. Occurrence counter 74 - 25: W lead, status - present. Occurrence counter 127 I just pulled out the panel where the roof latches, and confirmed that all 3 connectors were firmly seated. Any thoughts or suggestions? -John

POST 2Original post

Quotes source post: 667940

My alarms/siren kept going off randomly so I disconnected the wires to both of them. Located under the front bonnet. My alarms not connected to an immobiliser. Check the code on the ECU under the seat you can read the label using a torch. Mine was M534 UK spec. Basically the random siren noise and chirping has gone. Clearly though the sensor failure causing the problem remains, however it has somewhat reduced my stress levels. Hope that helps

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